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COI 37.5% and Higher is in Coefficient of Inbreeding.
COI 37.5% and Higher. Diagram of a Brother and Sister Relationship with a COI of 37.5%.
In 69BC Cleopatra VII Philopator 69BC 30BC was born to Ptolemy XII Auletes Pharoah of Egypt 117BC 51BC (age 48) and Cleopatra V Tryphaena 57BC. Coefficient of inbreeding 47.27%.
Around 117BC Ptolemy XII Auletes Pharoah of Egypt 117BC 51BC was born to Ptolemy IX Soter 142BC 81BC (age 25) and Cleopatra IV 138BC 112BC (age 21). The identity of his mother is subject to debate. Some sources refer to him as illegitimate. Coefficient of inbreeding 44.16%.
In 115BC or 114BC Berenice III 115BC 80BC was born to Ptolemy IX Soter 142BC 81BC (age 27) and Cleopatra Selene of Syria 135BC 130BC (age 20). Coefficient of inbreeding 44.16%.
Cleopatra V Tryphaena 57BC was born to Ptolemy X Alexander I 140BC 88BC and Berenice III 115BC 80BC. Coefficient of inbreeding 44.16%.
COI 37.5% and Higher. If a man has a daughter, then has a daughter with that daughter, then has a child with that daughter the child will have a COI of 37.5. Similarly if a brother and sister have a son and a daughter and they have a child, the child will have a coefficient of inbreeding of 37.5%.